Restructuring and Severance - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses	$ 714,000	$ 202,000	$ 817,000
Software development costs capitalized in period	93,000	84,000	103,000
Net credit representing difference between amounts accrued and the settlement amount		151,000
Restructuring activities	0	0
3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses			817,000
Facility Rental | 3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses			521,000
Severance
Restructuring Cost And Reserve [Line Items]
Software development costs capitalized in period	333,000
Severance | 3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses			296,000
Severance
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses	$ 421,000	$ 353,000
Impairment of ROU Operating Lease Asset | 3VR
Restructuring Cost And Reserve [Line Items]
Restructuring and severance expenses			$ 281,000